14 Arietis
Star in the constellation Aries
From Wikipedia, the free encyclopedia
14 Arietis (abbreviated 14 Ari) is a star[7] in the constellation of Aries. 14 Arietis is the Flamsteed designation. It has an apparent visual magnitude of 4.98,[2] which means it is visible to the naked eye. Based upon a measured annual parallax shift of 11.30 mas,[1] is it located at a distance of approximately 290 light-years (89 parsecs), give or take a 30 light-year margin of error.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Aries |
| Right ascension | 02h 09m 25.3363s[1] |
| Declination | +25° 56′ 23.612″[1] |
| Apparent magnitude (V) | 4.98[2] |
| Characteristics | |
| Spectral type | F2 III[3] |
| U−B color index | +0.15[2] |
| B−V color index | +0.33[2] |
| Astrometry | |
| Radial velocity (Rv) | −1.21[4] km/s |
| Proper motion (μ) | RA: +70.46[1] mas/yr Dec.: −34.99[1] mas/yr |
| Parallax (π) | 11.30±1.07 mas[1] |
| Distance | 290 ± 30 ly (88 ± 8 pc) |
| Absolute magnitude (MV) | 0.26[5] |
| Details | |
| Radius | 4[4] R☉ |
| Luminosity | 32[4] L☉ |
| Surface gravity (log g) | 3.2[4] cgs |
| Temperature | 6,761[4] K |
| Rotational velocity (v sin i) | 139.6[4] km/s |
| Other designations | |
| BD+25°355, FK5 1089,HD 13174, HIP 10053, HR 623, SAO 75171.[6] | |
| Database references | |
| SIMBAD | data |
This is an astrometric binary system.[7] The primary has a stellar classification of F2 III,[3] suggesting that it is a giant star. Despite being an evolved star with four[4] times the radius of the Sun, it is spinning rapidly with a projected rotational velocity of 139.6 km/s.[4] This is causing a pronounced equatorial bulge, with the radius of the star along the equator being 24% greater than the radius at the poles.[8] The star shines at 32[4] times the luminosity of the Sun, with this energy being radiated from its outer atmosphere at an effective temperature of 6,761 K.[4] This heat gives it the yellow-white hued glow of an F-type star.[9]